<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Hello</title>
</head>
<body>
    <p>Hello, World!</p>
    <a id="logout-btn" th:href="@{/sign_out}">我要退出！</a>
</body>
</html>